<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>盒子模型</title>
		<style>
			.box1 {
				/*border-width: 10px;
				border-color: red;
				border-style: solid;
				复合写法:border:* * * (顺序不论)
				solid:实线  dashed:虚线  dotted:点点线
				px:像素
				颜色的写法：
				颜色的单词，rgb(0~255)
				
				*/
				border: 3px solid rgb(130, 230, 201);
				width: 200px;
				height: 200px;
				/* padding: 20px; */
				px;/* padding-left: 30px;
				padding-top: 25px;
				padding-right: 20px;
				padding-bottom: 10px */
				padding: 20px 30px 40px 50px;
				
				
			}
		</style>
	</head>
	<body>
		<div class="box1">
			hello world!
		</div>
	</body>
</html>